Lamp



May 14, 1935.

c. B. KURTZ LAMP Filed May 14, 1934 INVENTOR. Cyrus 5 ffw'zfg 5 9: m6, ATTORNEi? ?atented May 14, 1935 r s anorqs o LAMP C ru urt' ev ie fl Oh Application May 14, 1934, serial No; 725,535 '5o1asims w1.zio irs) V Thepresent invention relates to ah improvethe in er diameter of the flange 3 of the casing no t mumps; particu1ar1y apted for use in I: The flange'fi is soloo'atedon the ring 5':.-as to a I object arid'na forno a shoulder fitting the flange-3. t of my 11o ntion is"t pro -d'e such a lamp The lens tmay beloermahently or separably at- 5 which arrhe readilias serr'ihled disassembled, tached to the ring nielriber -53 The-former (3011- 5 and in'wliih he 2 2i.

re u e to Min mum? rqi separable-partsis structiorf is illustrated in Fig. 2, iniwhieharing member Tis soldered -or we'1ded' to the 'riiig'memltisa further object of the invention to provide b'er-Band serves to secure thelehs 11' in a position sucha simplified struoture may be produced attached thereto. In the modificationshOW'nP'in ihilarge quantities and manufactured at fairly Fig.3,-t1 .e'1ens4- is separable from-the rifig fand low expense, Additional objects and advaptags isdflorrnalljheld in pds'itio'fi againstthe ring iby i dfyheinvention shallbecome apparent as the a fi i folio 'iri @sfiptiorrpfqggg 'electrie bulbs is carried in the medial porti the aocornplish rner t of the foregoing and tiOIlOfiii'l {reflector t; by means ofthe-SQeketlfl. ends'asaigi invention; then, c'tjnsistgof the The Outer O1 fr'Oht edg'e "of th'e-l eflebthi is*in h e lfa r f l y 'desqr bed and particuthe forrn'ofa 'ohannel"! i. Ananriular gask'et l2 ia rly pont e out in thefclaims; which is of substantially square oi rectarigulalr xed drawihgandthe follgwing de5c1'ip cross-section is positioned in the channel fl'ifid th mqetair tgy ammie embodyadaptedto hearhgainstthe iriside face'oi th'eflens mg the: vention, such di sclosefdhieans bhfi- 1$'Directing attehtion toFigS. 2 and:3',="it should go tutirig, howeverybut one of va;ri6us struct1ira,1 be noted that the outer diameter ofthe' refiector iormsinwhiehthe principleof the ifi ti n may 8 i'sl ess than the inner diameter of'the mange 3. be u "d "Ahrack'et IS'has'alaterally"proj'ectihgiendipor- In ai a x drawing;.. 5 tion it which is secured to the refieetor 3% and F1 is a'sectiohal iew, ta upon vertical socket W. The other'end lfiof theibracket 113 is 25 a lamp struc tureembiqdyingtheprjncithreadably engaged'hy a stud 'lh'eUStlld B p11 emy i nt 2 i a m fragha's a flan'ge oz-collar portion fl whichis adapted f tary pi'fiiofl b i 1; p fg view Similar to bear agairist'jth'e inwardly turr l'edliflangezrlis of .zhutshowing a slight'modification of the casing' t". The flange i8 defines an aperture s wmg theiens or e'losiir'm mberm l jp te'ndi lt wili thus be seen thatlrotatiomsofzathe a 5 is' a partial side View illustrating themanner of knob W and ythe stud lfigiwil'ltrserve izi'stallati ori and removal "of "the lns' r closure to retract or urge the reflector uforward-lyi against rheniher'fFigffi is ayr om en ie t k on the i ner side of 'the lens "A andiring'i'inembe'rl 5.

blafie 110mm to Fig. 5 and also illustrating the Such l 'Q pa ticular advantage when 35 Iriannerof installation or removalo'f the lens. the ea fit s d'inva ying thicknefiw ifiiow rerej 'rmgmore particularly to the di'aW- 3 c m Womduring usae h The closure iIigQ thereis sriqwn therein a howl-shaped casing member, :consisting of the lens-i4 arid (ring i5: is member twhieh' may besecure d to bra k t, ba installed or -removed in the opening1in tires-casing 40 or some similar support on an automgbil e by i byreasoflof the fact thattlzieillatter; and'rzits 40 1 m of fh' rth laijd tud2; e g m' 5 flange 3 is distortable. That is to samwhenapfiesber' lis iabricated'frorn' sheet metalahd has'an appliewiw th esir'ig memberfltsubstaniriwardli kiirected "flange" 3 on its forward or tia yas iniiicated'by ws in i 6,*=.the from-nd; The casing I and the flange 3 a irontopeningfiof the easing twill-be] deformed 45 amp Spun fmm t f u t g from a"'circu1ar toan elliptical Shapeyin-which 45 L physical properties that they inay be" flexed the major axis isgreater than theouter diameter distortedlfrdrifa normally circular forrn to "an oftheiflang'e o the cl sureme bem Ininstalellipticahorm. The flange '3, oicourse, defines latioii, thefian'ge-fiof the ririgifiis placdimtzona rciil iopening' in the front end of the casihg' l, tact withthe irineredged-the flange 3, 'andzrthe surejmeirib'er qonsistingof the'transparent lelis' i and ringflare-held in a=s1ight1yuinc1ined '1 ss iens i and the metailic rings is'adaiited to position with .re'spectto fthe planeeofthe opening r L r 1 g torted as above described andithe lens andrring ferring toFig Z; the outer diameter of the -5 'are-ii'rioved tel'oser toward a vertieah position hgffi oftheelosureimember is' greater than whereby the horizontahdiameten of,- the::flar1'ge.fi

I win;

slips past the major axis of the temporarily elliptical opening. At the same time, the lower edge portion of the flange 6, as shown in Fig. 5 has an opportunity to drop down into contact with the inner surface of the casing l at a point adjacent the base of the flange 3. When this position has been reached, the top or upper edge of the flange 6 is then permitted to clear the inner edge of the flange 3 and the lens i and ring 5 may be moved into a vertical plane position coincident with the plane of the open end of the casing i. In this manner, the flange E has been inserted past the flange 3. Next the stud I6 is rotated by means of the knob 19 and the reflector thereby forced outwardly with respect to the casing l to press the lens 4 and ring 5 into contact with the flange 3.

Referring now to Fig. 2, it should be particularly noted that the distance a which represents one-half the difference between the outer diameter of the flange 6 and the inner diameter of the casing l at a point adjacent the base of the flange 3 is greater than the distance I), which represents one-half the difference between the inner diameter of the flange 3 and the outer diameter of the flange 8. Or in other words, the inner diameter of the casing member I at a point adjacent to the base of the flange 3 and the inner diameter of the flange 3 define a space for the reception of the edge of the closure member which is greater than the overlap of the flange 5 with respect to the flange 3. The provision of the space or distance a is therefore necessary in order that a portion of the flange 6 may be moved thereinto and the diametrically opposite portion of the flange 6 may then be in a position to clear the corresponding portion of the inner edge of the flange 3.

The last described mode of operation is, of course, reversed when the closure member is removed from the casing I. 7

When the form of construction shown in Fig. 2 is employed, namely, when the lens and ring 5 are permanently secured together, the flange 6, of course, will necessarily be rigid and non-flexible; However, when the form of construction as shown in Fig. 3 is employed, the ring 5 and flange 6 may be flexible and first inserted before the insertion of the lens 4. When the lens 4 is inserted, the ring 5 will be distorted in the same manner that the casing and flange 3 are flexed, and the lens 4 may then be passed to the inner side of the ring 5.

It will thus be seen that my above-described invention provides a lamp structure consisting of only three essential, separable parts, namely, the casing, the closure member and the reflector. And both the closure member and the reflector together with its bracket l3 and stud l6 are removable and insertable through the front opening of the casing.

Furthermore, it will be seen that the abovedescribed lamp structure obviates the necessity for the provision of several small removable parts such as screws, bolts, pins, wires or springs.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the structure herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention:

1. In a lamp structure, the combination of a in said casing member, an inwardly turned flange on said open end and integral with said casing member, a reflector having the diameter of its outer edge less than the inner diameter of said flange, a closure member for said casing member having a diameter greater than the inner diameter of said flange, said casing member and said flange being capable of distortion into the form of an ellipse whose major axis is greater than the diameter of said closure member whereby the latter may be inserted within said casing member, the diflerence between the normal inner diameter of said casing member at the base of said flange and the outer diameter of said closure member being greater than the difference between the normal inner diameter of said flange and the outer diameter of said closure member, and means connected to the rear face of the reflector and movably operable from outside said casing member for urging said reflector and said closure member outwardly.

2. In a lamp structure, the combination of a flexible metal casing member, a circular open end in said casing member, an inwardly turned flange on said open end, a transparent lens, a rigid metal rim associated with said lens, said rim having a greater diameter than the inner diameter of said flange, said casing member and said flange being capable of distortion into the form of an ellipse whose major axis is greater than the diameter of said rim whereby the latter together with said lens may be inserted within said casing member, said flange and said casing member defining a space adjacent the base of said flange for the reception of a portion of the outer periphery of said rim during the insertion and removal of said rim and said lens, said space be ing sufficiently deep to permit the diametrically opposite portion of the periphery of said rim to clear the adjacent inner periphery of said flange.

3. A lamp comprising a resilient metal casing having a circular open end, a closure within the casing and of a greater diameter than the open end, a shoulder on the closure spaced from the edge thereof and fitting the circular open end, the difference between the normal inner diameter of said casing at a point adjacent said open end, and the outer diameter of said closure, being greater than the difference between the normal inner diameter of said open end and the diameter of said closure, a reflector, and means within the casing engaging said reflector to retain the closure with its shoulder fitting the circular open end and operable to permit movement of the closure inwardly from the open end to withdraw the closure shoulder from the open end, whereby the casing may be distorted to change the open end to elliptic shape capable of permitting removal of the closure through the greater diameter of the elliptic opening thus produced.

4. A lamp comprising a resilient metal casing having an open end whose edge defines an opening of constricted dimensions relatively to the internal dimensions of the casing immediately adjacent to the opening, a closure having larger dimensions than the opening and smaller dimensions than said internal dimensions of the casing, and located within the casing immediately adjacent to the casing opening, a shoulder on the closure spaced from the edge thereof and fitting the casing opening, the difference between the normal inner diameter of said casing at a point adjacent said open end, and the outer diameter of said closure, being greater than the difference between the normal inner diameter of said open end and the diameter of said closure, a reflector,

and means within the casing engaging said reflector and retaining the shoulder with the edge of the casing opening occupied by the shoulder,

said means being operable to permit movement bf the closure inwardly to withdraw its shoulder from the open end, whereby the casing opening may be freed for distortion to a shape permitting passage of the closure therethrough.

5. In a lamp structure, the combination of a flexible metal casing member, a circular open end in said casing member, an inwardly turned flange on said open end, a reflector having the diameter of its outer edge less than the inner diameter of said flange, a closure member for said casing member having a diameter greater than the inner diameter of said flange, said casing member and said flange being capable of distortion into the form of an ellipse whose major axis is greater than the diameter of said closure member whereby the latter may be inserted within said casing member, the difference between the normal inner diameter of said casing member at the base of said flange and the outer diameter of said closure member being greater than the difference between the normal inner diameter of said flange and the outer diameter of said closure member, and means connected to the rear face of said reflector, a portion of said means extending through a relatively small opening in said casing member and being accessible from outside thereof, said means being thereby movably operable for urging said reflector and said closure member outwardly from 15 said casing member.

CYRUS B. KURTZ. 

